Door-securing mechanism



May 17, 1932. E. H. CARLSON DOOR SECURING MECHANISM Filed Jari. 12, 19312 sheets-sheet 1 o Wm@ n@ AH wm @mw MMM, 20mg V May 17, 1932. E H*CARLSONA 1,858,8044

DOOR SECURING MECHANISM Filed Jan. 12, 1931 2 sheets-sheet 2 E m4 ,M m@MJA L@ l vment of the type set forth comprising a lock Patented May 17,1932 sra EVOLD H. CARLSON, 0F CHICAGQ ILLINOIS DOOR-SECURINGNEEVCHANISMI 'Ap'puuon inea January 12, 1981. serial No. 508,166.

" M-yinvention relates todoor securing mechanisms and is directedtowards providingan arrangement of this character lwhich is moreparticiilarlyA intendedfor garage doors, although the essentialconception is readily applicablein other surroundings. i

One object otrny intention is to devise a door securing v'mechanismcomprising bolt bars which may be loclied in securing position againstunauthorized openings from one side of the door and releasedfrom thesame side, or independently released on the: opposite side of thedoor'for retraction to an unlocking position, regardless of whether ornot the locking means has been neutralized.

'A further object is to provide a securing mechanism of V'the characterindicated in which thefbolt'bars are provided with a pair ofindependently bperable, actuating levers locatedonopposite'sides of thedoor and associated with a singleflocking means, 'the latterbeing'releasable from eitherside of thedoor.v

A. .further Vobject is Vtodevise an arrange,-

mechanisn'i and bolt bars operatively assos ciated therewith forsecuring the" door in locked position, the tumbler of the lock mechanismunder locking conditions being Aconnected to ,the barsl tofpreventltheir retraction and capacitated for release afkey or equivalentactuation of the lock mechanism from one side of the door andby a simplecam bar from the,` opposite side'.v e

A further'objectis to provide a door securing: mechanism having a:lock'which may be .rendered whollylinoperativeby devices actuablefromone side of the door and maintained in thisV 'condition for suchtime as may be desired.,` n.

Anfurther` Objectis to devise a securing mechanism for doors in whichthe bolt bars are normally extended' for engagement with recesses. inthe door frame and Vprevented from beingfret'ractied by a lock whosetumbler may be released from either side of the door.

The present invention embodies particular advantageswhen utilized inconnection with garagefdoorsffaslit permits the door to be securelylocked against. unauthorized Lopenings from one side thereof, whilepermitting their free opening from the opposite side, independent of thelocking mechanism, in the event that access is had to the interior ofthe garage by doors other than the door in question. ,lt also permitsthe` locking mechanism to be neutralized for such time as may be desiredwith the result that the .bolt Ysecuring means may be releasable fromeither side of the door, a factor which is of prime impor-` tance ingarages of the public type. The releasing levers for the securing boltsare so disposed on opposite sidesof the door that the mside lever may beoperated wholly independently of the outside lever, so that the lock'mechanism need not be disturbed in the event that the securing bolts arewithdrawn from within the garage.

These and further objects of my invention will be set forth inthefollowing specification,`reference being had to the accompany-A ingdrawings, and the novelmeans by which said objects are eectuated will bedefinitely pointedl out in the claims.

In the drawings :V n Figure l is a partial elevationot' th'e.interiorside of a garage door andV showing the securing bolts in extended orlocking position, the'particular door shown being of the Vup-` wardlysliding type, although the particular kind of door does not `form anypart of the present invention. .4

Fig. 2 is an enlarged elevation of the rear side of the locking andreleasing mechanism, as viewed in Fig. 1. Y Fig.` 3 is a view similar toFig 2, the interior releasinglever and the disk which vestablishesconnection therewith and the. eX-

terior releasing lever being removed tol show certain internal parts. 1

` Fig. 4 is ank enlarged view, partly in'l section, showing one of theboltsecuring means in Veno'agernent with 'the frame of the door.

Fig. 5 is a section along the line 5 5 in Fig. 2, looking in thedirection of the arrows, and showing the internal construction of the'locking mechanism and its association with the releasing levers for' thebolts. Fig. 6 is a section along the line 6- 6 inV 5, looking in thedirection of the arrows, and showing the relation between the rock shaftwhich extends through the door and the member which establishesccnnection therebetween and the interior releasing lever.

Figs. V7 and 8 are sections along the line V7--7 in Fig, 5, looking inthe direction of the arrows and showing, respectively, the

positions assumed by the tumbler of the lock mechanism in locking andreleasing posi naturethereof .forms no part of the present invention.`SaidV door slidable within a door frame 11 and is retained in closedposition'by means of a pair of oppositely dispos-ed bolts 12 which areslidably mounted in casings 13 attached to the inner side of thedoor andwhose outer ends project with j in recesses 14formcd in the door frame11.

The inner ends of said bolts are pivotally connected by means of links18 to the opposite ends of arlever 19 having` a handle portion 20. Saidlever is preferably located centrally of the door 10 and islooselycarriedon the reduced, threaded end 21 of a rock shaft 22 which projectsentirely through the thicknesstof the door as hereinafter described. Thelever 19 is therefore free to ,independently actuate the bolts 12 and isretained in the position indicated by means of adjusting and lock nuts24 and 25, respectively, which set said lever against a .separatingwasher 26, the latter in turn contracting'with therear surface of aflanged, or cup-shaped, disk 27 fixedly mounted on the reduced portion2l, the latter beingpro-Y vided'with a pair of opposit'ely disposed,flat surfaces 23 (see Fig. 6).. 1

. The rock shaft 22 is jo'urnaled in a plate 28 which isaflixed to therear side of thedoor 10 and also in a plate 29 which secured to l theoutside of said door, said shaft projecting entirely through said lastnamed plate to receive Von the end Ythereof av second releasing lever30. From the description of the several parts as notedy above. itwill'be understood that an actuation ofthe releasing lever y#-lOywillimpart "a motion of rotation to the' disk 27, the flanged portion ofwhich extends towardv theinside surfaceJof the doer. but willnot'exercise any effect on the other re leasing lever 19V through theshaft `22 directly.A y y Beneath the shaft 22` a flange 31 projectsrearwardlyfrein `the plate 28 for reception fwithin a slot formed in ardisk 33r which is-al'sefast onthe sliaft22 by reason of the flatsurfaces formed on the latter, said disk being located within theflanged disk 27. In the operation of the mechanism, the end walls 34, 34of the slot 32 engage the flange31 and thus determine the limits ofmovement of the lever 30, thereby preventing undue strain on the severalparts, since a person operating the lever 3.0 would otherwise be unableto ascertain when the boltsv 12 were suliic'iently retracted to free thedoor for movement. p

Above the. shaft 22, a casing 35 is secured to the rear side of theplate 28 to thereby form a pocket 36 which opens upwardly and withinwhich is slidably mounted a tumbler in the form of a plate 37. In thelocking posi tionV of the. door,- the tumbler 37 projects through 'aslot 38 formed in the flanged poi. tion of the disk 27 and is atallltimes subjected `.to the pressure Aexerted by a pair of springs 39 whoselower ends abut against the bottom` of the pocket36 with the oppositeends encircling centering pins40 which pro- -ject downwardly from theunderside of fthe tumbler 37. i f y A slot 41. is cut partly across thewidth of the tumbler 37 andV the walls of said slot are engaged byv acrank pin 42 which. is carried by a disk 43v mounted on'V the inner endof a stem 44 whose forward end is-connected to a convenient type of lockmechanism which viS designated generally by the numeral 45 (see Fig.5.). The internal construction lof' the i lock mechanism 45. forms nopart of thepres.- ent invention, but however constructed, it is`contemplated that it will bc connectediinv some 100 manner tothe forwardend of the stem '4 4' such that when the key 46 manipulates said lockmechanism in vthe usual mannerit will imparta motion of rotationto thestem 44 and consequently a reciproca-tory movement. toA 105 thetumbler37, motion inv a counterclockwise direction, as viewed Vin Fig. 7 movingsaid tumbler downwardly until it has completely cleared the walls of theslot 38, thereby freeing the disk. 27'for rotation. This latter po- 1h10sitioii is shown in Fig. 8. The disk 43 seats. against an offset portion47 of the plate y28 and the latter is fitted Within a convenient recess48 cut into the thickness of the door.

. It is frequently desirable to neutralize the lili` lockingk mechanismfrom the inside of thel y door to thefend that. the outside releasing.lever maybe employed to open the'door with out the necessity fo'rusing akey. This purV pose is fulfilled by a cam` bar 49 having a 120 flange50.*at one end'thereof vsuitable for nger enga-gementand which projectsthrough an openingl formed` inthe flanged portion l of the disk 27, forslidable mounting betweenk a'l plurality of pins 52 which projectrearwardly from the plate 28. The bar 49 is re-y tained in position.against saidl plate by means, of aheaded pin 53 which passes through@anelongated. slot 54 formed in the cam bar 49. The actuating endfof thecam bar 49 is pro- 139 vided with aninclined surface 55 and beyond saidsurface, a finger 56 projects through an opening 57 provided in one wallof the casing 85. The width of the opening 57 issufficient to permit thefree movement of the caln bar'49 and when this movement occurs, amovement toward the left is Aviewed in Fig. 7 ,the inclined surface 55engages the lower wall of the slot 41 to thereby move the tumbler `37into the unlocking position shown inF ig. V9, it being understood thatthe slot 41 possesses sufficient width to Apermit this unlockingmovement under the actuation of the cam. bar 49 without binding on thecrank pin 42, or on said cam bar. When the cam bar 49 is returned to theposition shown in Fig. 7, the springs 39 will restore the tumbler 37 tolocking position, providedthe slot 38 of the disk 27 is in registeringposition.

As before stated, the only connection between the lever 19 andthe bolts12 is by means of the links 18 and said links are also utilized asinstrumentalities to establish an operative connection between theexternal releasing lever 30 and said bolts. For this purpose a pair ofears 58, 58 project rearwardly from the surface of the disk 27, beinglocated on opposite sides of the lever 19 and spaced sufficientlytherefrom to permit a free and independent movement of the lever 19 fromthe inside of the door, regardless of whether or not the tumbler 37 isin locking engagement with the disk 27. -However, when said tumbler isin a retracted, or unlocking position, as shown in Figs. 8 and 9, thelever 30 may be moved to thereby rotate the disk 27 in a clockwisedirection, as viewed in Figs. 2 and 7, and to accordingly engage theears 58 with the lever 19, thus transmitting said actuating movementthrough the lever 19 and links 18 to the bolts 12.

By the use of my improved door securing mechanism, it is thereforepossible, assuming the tumber 37 to be in a retracted position, torelease the bolt means from either side of the door, or to release thebolt from the inside by means of the lever 19 regardless of whether ornot said tumbler is in a retracted position. The door may therefore beopened from the inside, assuming a locked condition of the same, withoutthe necessity for first releasing the locking vmechanism by means of thekey 46 from the outside. The capacity for neutralizing the lockmechanism b v means of the cam bar 49 is of particular advantage ingarages of all types, since the door 10 may be entirely closed with thebolts 12 extended into the recesses 14, without af fecting the capacityof the door to be opened from either side thereof.

While I have shown one set of elements and combinations thereof foreifectuating my improved door securing mechanism, it will be understoodthat the same 1s intended for purpose of illustratlon only and m no wiseto restrict my device to the exact forms` and structures shown, for manychanges may be made .therein without departing from the Spirit of myinvention.

I claim: i

in combination, a door, bolt securing means on said door for retainingthesamein a closed position, releasing means on one side of said door,locking means on the same side of the 1. rA door 'securing mechanismcomprising door for preventing unauthorized actuation said releasingmeans for preventing unauthorized actuation of the same, a second,independently operable releasing means on the opposite side of saiddoor, said first release ing means being connectible to said boltmeansthrough said `second releasing means, and a member on said opposite sideof the door movable to retract said tumbler from engaging positionwhereby said locking means is neutralized and said first releasing meansis freed for actuation.

3. A door securing mechanismfcomprising in combination, a door, boltsecuring means on said door for retaining the same in closed position, ashaft extending through said door, a handle fixed to said shaft on oneside of said door, a second'handle loose on said shafton the oppositeside of said door, a first connection between said second handle andbolt means, a. second connection between said shaftV and secondhandle,'a lock mechanism key controlled from `the first handle side ofsaid door and having a tumbler for preventing actuation of said secondconnection,`and means for releasing said tumbler independently of saidlock mechanism. i

' 4. A door securing mechanism comprising in combination, a door, boltsecuring means on saidA door for retaining the same ina closed position,a shaft extending through said door, a handle fixed to said shaft on oneside of said door, a second handleloose'von said shaft on the oppositeside ofl said door, a first connection between said second handle-andbolt means, a second connection between said shaft and second handle,said second connection 'permittingv the free and independent actuationof said second handle, a lockmecha-V nism-key controlled from the firsthandle side releasing 99 door comprising a tumbler engageable with of`said door and having a tumbler for .pre venting 4actuation of saidsecond connection, and means for releasing said tumbler independently ofsaid lock mechanism.

' means on said disk for engaging said second handle When rotatedthrough a certain range of movement, a lock mechanism kkey controlledfrom the first handle side of said door 4and having a tumbler forpreventing actuationof said disk, and means on the second handle side ofsaid door for releasing said tumbler independently of said lockmechanism.

6. A door securing mechanism `comprising in combination, a door, boltsecuring means on said door for retaining vthe same incl'osed Yposition,'a shaft extending through said door,

a handle fixed to said shaft on one side of said door, .a second handleloose on said shaft on the opposite side of said door, connectionsbetween said second khandle and bolt means,

a flanged disk fixed on said shaft, ears formed on said disk forengaging said second handle When rotated througha certain vrange ofrmovement, a lock mechanisinkey controlled from the firsthandle side ofsaid door and Y having a tumbler for preventingactuation of tion of saiddisk, anda cam jbar for releasing said disk, and means onV the secondhandle second lever, locking meansl for said first" releasing lever,.and means for 4nentralizin'f'g saidflockin'g meansA from elthe'r sideofthe door.

9. A door securing `mechanism comprising in combination, door, boltsecuring -means on said door for-retainingthe same in closed position,.a shaft extending through said door, a handle fixed tosaid shaft'onfone sideofvsaid door, a second :handle loose on said shaft on theyopposite side vof saidv door, a first'connection between said -secondhandle and bolt means, a second connection between said shaft and secondhandle, locking mechanism comprising av tumbler for preventing actuationof saidV second connection, I and means for controllingl theA positionvof said tumbler from either side ofthe door'.y

In testimony whereof I have subscribed'm'y naine. Y

EVOLD H. CARLSONn A side of said door for releasing said tumbler v yindependentlyT of said lock mechanism.

7. A door securing ymechanism comprising in combination, a door, boltlsecuring means on said door for retaining the same in a closedposition, a shaft extending Vthrough said door, a handle fixed to saidshaft on one side of said door, a secondV handle loose on said shaft onthe opposite side of ysaid door,

A connections between said second handle and bolt means, a flanged diskfixed on said shaft,

means on -said disk for engaging said secondl handle when rotatedthrough a certain range ofr movement, lock mechanism key controlled fromthe'first handle side-of said door and having a tumbler for preventingactua# I said tumbler independently of' said lock mechanism located onthe second handle side of vsaid jdoor.L y

'8. Azdoor securing mechanismcomprising in combination, adoor, boltsecuring means on said ldoor for retainingthesame in a closed position,la releasing lever on one side f of sai-dfdoor, a second,independently`operable, releasing lever on the opposite vside-'of said door, .saidffirst releasingnl'ever being connected to said bolt means through said.ics

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